Koala vs Mountain Spiny Newt

Phascolarctos cinereus compared with Echinotriton maxiquadratus

Key Differences

• Koala is Vulnerable while Mountain Spiny Newt is Critically Endangered.

Taxonomic Classification

Rank	Koala	Mountain Spiny Newt
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class	Mammalia (Säugetiere)	Amphibia (Amphibien)
Order	Diprotodontia (Marsupials)	Caudata (Schwanzlurche)
Family	Phascolarctidae (Koalas)	Salamandridae
Genus	Phascolarctos (Koalas)	Echinotriton
Species	Phascolarctos cinereus	Echinotriton maxiquadratus

Evolutionary Relationship

Koala and Mountain Spiny Newt share a common ancestor at the Phylum level: Chordata. (Chordatiere)

Conservation Status

Koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Mountain Spiny Newt

CR — Critically Endangered

Physical Characteristics

Attribute	Koala	Mountain Spiny Newt
Diet	Herbivore	—
Average Lifespan	15 years	—
Average Length	75 cm	—
Average Weight	10.0 kg	—

Habitat & Geographic Range

Koala

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Found in Australia. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Mountain Spiny Newt

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Koala

Iconic marsupial of eastern and southeastern Australia, koalas weigh up to 15 kg and spend up to 22 hours daily sleeping to conserve energy from their low-calorie eucalyptus leaf diet. Highly specialized to process toxic eucalyptus compounds that would kill most other mammals, they have gut microbiomes uniquely adapted for detoxification. Listed as Endangered in 2022, with populations decimated by chlamydia disease, habitat clearing, and climate change.